Archduke Franz Ferdinand, heir to Austria-Hungary's throne, and his wife, Sophie, are assassinated by Serbian nationalist Gavrilo Princip while the couple were visiting Sarajevo, Bosnia.
Period: to
WWI
Austria-Hungary declares war on Serbia.
Germany declares war on Russia.
Germany declares war on France.
The United Kingdom declares war on Germany, after Germany invades Belgium.
Austria-Hungary declares war on Russia and Serbia declares war on Germany.
U.S. President Woodrow Wilson announces the U.S. will remain neutral.
Germany declares a "war zone" around Great Britain, essentially effecting a submarine blockade where even neutral merchant vessels were to be potential targets.
Russian Tsar Nicholas II abdicates.
The United States declares war on Germany.
U.S. President Woodrow Wilson issues his Fourteen Points to peace.
The Treaty of Versailles officially ends World War 1.
